"א"ר אילעאי: בשלושה דברים אדם ניכר - בכוסו ובכיסו ובכעסו. [עירובין ס"ה:]
Three ways that the true person comes out: When he drinks too much, when it comes to his money, in his anger.
Drinking - I get it. There is a chemical change inside the person, inhibitions are removed and we see what he is hiding.
Anger - I get it. Chemical changes in the person, inhibitions removed, a very deep placed inside the person is touched and the true self emerges.
But his money?? That is something EXTERNAL to the person. How does $$$$$ cause the true person to emerge? We see from here a deep truth. Money touches a very deep place inside of a person. People can fake it until it comes to their money. WOW!!
You want to learn more about yourself? See how you act when angry. See what thoughts go through your head and what words come out of your mouth. And analyze your relationship with your money. I don't recommend you drink....